Breathing is an example of ________ reflexes
Fill in the blank(s) with correct word
involuntary
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Which is not true regarding ligaments?
A. Ligaments are composed of dense regular connective tissue. B. Intrinsic ligaments are thickenings of the articular cartilage. C. Extrinsic ligaments are physically separate from the articular capsule. D. Extracapsular ligaments are outside the articular capsule. E. Intracapsular ligaments are within the articular capsule.
Why is the blood-testis barrier important?
A) because spermatozoa and developing cells produce surface antigens that are recognized as foreign by the immune system B) because some blood contents are toxic to the spermatozoa C) because immature sperm cells lose their motility when they encounter any blood component D) Actually, the blood-testis barrier has no function.
The extraembryonic membrane that persists as part of the urinary bladder is (the)
A) allantois. B) yolk sac. C) chorion. D) amnion. E) None of the answers are correct.
Which of the following DNA molecules is the most stable?
CTGCATAC GACGTATG GAAATTTC CTTTAAAG AGTCGAAT TCAGCTTA GCGTGCAC CGCACGTG GGATCCTG CCTAGGAC